a. Triangles ABC and CDE are called congruent (if they have the same shape and size) or similar (if they have the same shape but not necessarily the same size).
b. The slope of line AE can be written as (change in y)/(change in x) or as the rise over run between points A and E on a coordinate plane.
c. This is a geometric area relationship, as it often relates to how the areas of two shapes (such as triangles) compare to one another based on their geometric properties.